Java Arrays class detailed and instance code _java

Recently do project to use arrays class, here tidy up, hope everybody can master arrays.

1.Arrays class overview

A tool class that operates on an array.

Provides sorting, lookup, and other functions.

2. Member Methods

public static String toString (int[] a)

public static void sort (int[] a)

public static int BinarySearch (int[] a,int value)

package com;

Import Java.util.Arrays;

/**
 * Arrays class overview and Common methods
 *  tool classes for manipulating arrays.
 *  provides a sort, lookup and other functions.
 * Member Method
 * Public  static string toString (int[] a) converts an array of type int to a string
 * public  static void sort (int[) A to sort the array, internally using the quick sort * Public  static int BinarySearch (int[] a,int key) Two-point lookup method
 * @author Hu Weiwei
 *
 * * Public
class Arraysdemo {public
 static void Main (string[] args) {
 int[] array = {3,44,2,546,74};
 public static string ToString (int[] a) converts an array of type int to a string
 System.out.println (arrays.tostring (array));//[3, 44, 2, 546)
 
 //public static void sort (int[] a) to sort the array, internally using a quick sort
 arrays.sort (array);
 System.out.println (arrays.tostring (array));//[2, 3,, 546]
 
 //public static int BinarySearch (int[) a,int key) Binary lookup Method
 int index = arrays.binarysearch (array, 5);
 SYSTEM.OUT.PRINTLN (index);//-3
 
 }

}

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